[Bug 98797] [BXT/KBL] - HDMI - HD audio passthrough dont work

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98797

--- Comment #94 from Jani Nikula <jani.nikula at intel.com> ---
And for Friday lols, a complete shot in the dark:

diff --git a/drivers/gpu/drm/i915/intel_audio.c
b/drivers/gpu/drm/i915/intel_audio.c
index d805b6e6fe71..49e3847fcb01 100644
--- a/drivers/gpu/drm/i915/intel_audio.c
+++ b/drivers/gpu/drm/i915/intel_audio.c
@@ -608,8 +608,13 @@ void intel_audio_codec_enable(struct intel_encoder
*intel_encoder,

        /* ELD Conn_Type */
        connector->eld[5] &= ~(3 << 2);
-       if (intel_crtc_has_dp_encoder(crtc_state))
-               connector->eld[5] |= (1 << 2);
+       if (intel_crtc_has_dp_encoder(crtc_state)) {
+               struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+               struct intel_lspcon *lspcon = dp_to_lspcon(intel_dp);
+
+               if (!lspcon->active)
+                       connector->eld[5] |= (1 << 2);
+       }

        connector->eld[6] = drm_av_sync_delay(connector, adjusted_mode) / 2;

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